6+ years turning product ideas into scalable web applications, end to end: architecture, back end, front end, testing and deployment.
In-depth case studies: the problem, the architecture, the decisions and what I learned.
An embedded AI assistant that turns plain-language questions into live dashboard views, with Skills, cost limits and tenant isolation.
Custom roles and section-wise permissions per tenant, a cross-tenant support role and privilege-escalation guardrails.
A SEPA Direct Debit provider by API and CSV batch, with RSA-signed webhooks, polling, reconciliation and a full provider mock.
Event-driven transactional email with legal pre-notifications and GDPR purging, then printed letters through a print-and-mail API.
From the first architecture sketch to a feature running in production.
I turn ideas and ambiguous requirements into a technical plan, estimates and a clear implementation path.
I build SaaS features, dashboards, APIs and integrations end to end, with tests, through to production.
Payment providers, signed webhooks, reconciliation and third-party APIs, including the failure cases.
Agents with tool use, streaming interfaces, evaluation, and cost and rate controls.
I join an existing team and codebase when you need senior capacity without a permanent hire.
Tell me what you're building and where you need help.
Products I built or worked on for clients and employers.
Food delivery platform: vouchers, order reporting and pricing rules on a Next.js, GraphQL and MongoDB stack.
Digital card service.
The tools I use to take a product from idea to production.
Product companies, agencies and freelance clients across Europe and Asia.
Building a SaaS product, a payment integration or an AI feature? I'm happy to talk through the idea and how to get it to production.
amsohag007@gmail.com ↗